6900940789 has 4 divisors (see below), whose sum is σ = 7069256460. Its totient is φ = 6732625120.

The previous prime is 6900940777. The next prime is 6900940817. The reversal of 6900940789 is 9870490096.

6900940789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4140279025 + 2760661764 = 64345^2 + 52542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6900940789 - 2³¹ = 4753457141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900940729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84157774 + ... + 84157855.

It is an arithmetic number, because the mean of its divisors is an integer number (1767314115).

Almost surely, 2^6900940789 is an apocalyptic number.

It is an amenable number.

6900940789 is a deficient number, since it is larger than the sum of its proper divisors (168315671).

6900940789 is a wasteful number, since it uses less digits than its factorization.

6900940789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168315670.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 6900940789 is about 83071.9013204826. The cubic root of 6900940789 is about 1903.8647823620.

The spelling of 6900940789 in words is "six billion, nine hundred million, nine hundred forty thousand, seven hundred eighty-nine".